Crossword Genius

Sea creature some sailor caught (4)

Ross

I believe the answer is:

orca

'sea creature' is the definition.
(term for a killer whale)

'some sailor caught' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ORCA' can be found hidden inside 'sailor caught'.

(Other definitions for orca that I've seen before include "27 [WHALE]" , "Killer at sea" , "grampus" , "Large predator" , "Killer in deep" .)

I've seen this clue in The Telegraph.
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